Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
unmannered is an adjective meaning "socially incorrect in behavior". It carries 2 recorded senses.
without artificiality; natural
“the doctor's quiet unmannered entry”
Definitions, synonyms and semantic relations for unmannered come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.